Apparatus for mixing and proportioning oil and water

ABSTRACT

An apparatus for mixing and proportioning oil and water comprises an upper lid, a first chunk member, a holder, a second chunk member and a base. The first chunk member and second chunk member have respectively an oil inlet, an oil-water mixture outlet and a water outlet that are connected with one another to receive and discharge oil and water. The first and second chunk members have respectively two oil flow gears and two water flow gears that engage with each other to control oil and water entering ratio to achieve optimal combustion efficiency. In the base, a located water regulation valve is adjusted to buffer water intake ratio responding to internal pressure alterations. The water regulation valve forms a buffer passage allowing different ratios of water to flow to the water in/out passage so that an improved oil-water mixture is achieved to enhance combustion efficiency of the combustion system.

FIELD OF THE INVENTION

The present invention relates to an apparatus for mixing andproportioning oil and water, particularly to an apparatus to get arequired oil-water ratio and rapidly mix the oil and water into a finemixture.

BACKGROUND OF THE INVENTION

The conventional system process of mixing oil and water for combustion,referring to FIG. 1, generally includes sending oil A (combustible oilsuch as diesel oil, heavy oil or the like) to a heater B to be heated toa required temperature; next, supplying water D according to a requiredcombustion ratio into an oil and water proportioning device C; sendingthe oil and water to an oil-water mixer E for mixing; then sending theoil and water mixture into an oil and water mixture heater F to heat themixture until reaching a burnable temperature; a small portion is firstburned by a burner with small fire G; then a greater portion is burnedby another burner with big fire H; the big fire H is ignited by thesmall fire G.

The conventional oil and water mixture combustion system like the oneset forth above includes an oil and water proportioning device C and anoil and water mixer E, as shown in FIG. 2. The oil and waterproportioning device C has an oil and water proportioning tank C1 whichdraws water and oil through a piston C3 via a cylinder C2 at a desiredratio, then the water and oil are pumped through the piston C3 via awater oil transport duct C4 to an oil and water mixer E for mixing.

Although the drawing proportion of oil and water through the piston C3in the oil and water proportioning tank C1 is quite accurate, duringcombustion when the pressure generated by the combustion system changesconstantly, the oil and water proportioning device C cannot buffer theoil and water ratio. Therefore, the oil and water proportioning device Cfurther cannot fully meet burning requirement and result in incompletecombustion and poorer combustion efficiency. In addition, the equipmentcost required by the oil and water proportioning device C also ishigher.

SUMMARY OF THE INVENTION

The primary object of the present invention is to overcome the drawbacksof the conventional oil and water proportioning device that provides oiland water ratio not responsive to internal pressure change duringburning of the combustion system and results in incomplete burning andundesirable combustion efficiency. Besides, the conventional oil andwater proportioning device cost highly. Therefore, the present inventionprovides an apparatus for mixing and proportioning oil and water whichincludes a first chunk member and a second chunk member holdrespectively a first oil flow gear and a second oil flow gear, and afirst water flow gear and a second water flow gear located therein thatengage with each other to control oil and water intake at a desiredratio to achieve optimal combustion efficiency. Before the oil and waterreaching the combustion system a water regulation valve located in abase can buffer water intake proportion in response to pressure changesgenerated in the apparatus. The water regulation valve forms a bufferpassage to provide water amount at varying ratios so that the apparatusfor mixing and proportioning oil and water can mix again to makecombustion smoother.

The apparatus according to the present invention comprises a upper lid,a first chunk member, a holder, a second chunk member and a base.

The upper lid has a plurality of fastening holes at the top and acoupling boss extended from the bottom of the upper lid.

The first chunk member is coupled and covered by the upper lid, andincludes an oil intake passage, an oil-water mixture passage and a firstgear chamber which communicates with the oil intake passage andoil-water mixture passage. The first chunk member also has a firstvertical passage and a second vertical passage beneath the oil intakepassage and oil-water mixture passage and communicating respectivelytherewith. The second vertical passage holds a water discharge duct witha water outlet and a water inlet formed thereon. The first gear chamberhas a first arched recess and a second arched recess respectively at thefront end and rear end, and a first elongate recess and a secondelongate recess respectively at the left end and right end thatcommunicate with one another. The first and second arched recesses holda first oil flow gear and a second oil flow gear inside that engage witheach other and are turnable. The first and second oil flow gears haverespectively a first axle hole and a second axle hole. The first axlehole is movably coupled with a first axle, while the second axle hole isfixedly coupled with a second axle.

The holder is located between the first and second chunk members, andhas a first hole and a second hole run through by the first and secondaxles, and a lubricant hole at one end communicating with the first holeand a water discharge passage at another end leading to the oil-watermixture passage.

The second chunk member is located between the holder and the base, andhas a water intake passage and a water exit passage communicating witheach other, and a second gear chamber communicating with the waterintake passage and water exit passage, and a first water passagevertically leading to the water intake passage from below. Besides, thesecond chunk member has a second water passage and a third water passageabove and below the water exit passage that communicate verticallytherewith. The second gear chamber includes a first and a second archedrecesses which are communicated with a first and a second elongaterecesses at the left end and right end of the second gear chamber. Thefirst and second arched recesses hold respectively a first water flowgear and a second water flow gear that engage with each other forturning. Inside the first water flow gear and second water flow gearthere are a first axle hole and a second axle hole respectively. Thefirst axle hole is movably coupled with the first axle, and the secondaxle hole is fixedly coupled with the second axle. The first and secondwater flow gears are formed at a thickness one third of the first andsecond oil flow gears to facilitate measuring the volume of water flowand oil.

The base is connected to a lower side of the second chunk member, andincludes a water feedback passage leading vertically to the first andthird water passages, and also contains a water regulation valvevertically positioned in the water feedback passage to buffer waterintake proportion in response to the pressure alteration. The waterregulation valve forms a buffer passage to supply water at differentratios.

The apparatus thus formed provides many advantages, notably:

1. The invention can provide a proportioning means simply structured todraw oil and water. Through rotation of the first and second oil flowgears, or first and second water flow gears oil and water can besqueezed and compressed to pass through, and the oil and water also canbe drawn at a constant ratio. The first and second oil flow gears, orfirst and second water flow gears also can be linked to an externalsensor to detect oil or water flow amount by the rotation number. Thestructure is simpler and the cost is lower.

2. The apparatus of the invention can evenly mix oil and water. Duringtransporting of the oil a suction force is generated to suck the waterfrom the water outlet of the water discharge duct in an atomized mannerto be fully mixed with the oil. The structure is simpler and the oil andwater can be mixed thoroughly in a fine state.

3. The invention also provides a lubrication mechanism. Lubricant can bedirectly drawn through the lubricant hole to lubricate the second axlewithout the trouble of the conventional technique of adding extralubricant, thus can reduce operation cost.

4. The invention provides a water flow feedback passage communicatingwith the water intake passage and water discharge passage, water flowingout through the water outlet of the water discharge duct can becontrolled from reaching too much that might result in non-uniformmixing of oil and water. Moreover, excessive water can flow back incirculation for reuse to save resources and prevent waste.

The foregoing, as well as additional objects, features and advantages ofthe invention will be more readily apparent from the following detaileddescription, which proceeds with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic configuration of a conventional oil and watermixing combustion system.

FIG. 2 is a schematic view of a conventional apparatus for mixing andproportioning oil and water.

FIG. 3 is an exploded perspective view of the apparatus for mixing andproportioning the oil and water of the present invention.

FIG. 4A is a top view according to FIG. 3 with the upper lid removed andshowing the first and second oil flow gears in an operating condition.

FIG. 4B is a cross section taken on line 4B-4B in FIG. 4A, and showingoil and water flow conditions.

FIG. 4C is a cross section taken on line 4C-4C in FIG. 4A, and showingthe first and second oil flow gears and first and second water flowgears in an operating condition.

FIG. 5A is a schematic view of the present invention showing the firstand second oil and water flow gears in an engaging condition.

FIG. 5B is a schematic view of the present invention showing the firstand second oil and water flow gears in another engaging condition.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 3, 4A and 4B for an embodiment of the presentinvention. It provides an apparatus 10 for mixing and proportioning oiland water which comprises an upper lid 20, a first chunk member 30, aholder 40, a second chunk member 50 and a base 60.

The upper lid 20 has a plurality of fastening holes 21 formed on the topthereof and a coupling boss 22 at the bottom.

The first chunk member 30 has a first upper recess 31 at the top of thefirst chunk member 30 to be wedged in by the coupling boss 22 of theupper lid 20, and a first lower recess 32 at the bottom of the firstchunk member 30, and a plurality of fixing holes 300 around the recesses31 and 32 corresponding to the fastening holes 21 to receive fasteningelements 23 such as screws to fasten the upper lid 20. The first chunkmember 30 further has apertures 301 formed on the periphery to receiveelectric heating pipes 302 to provide heating to facilitate machinestart. On two sides of the first chunk member 30 there are an oil intakepassage 33 having an oil inlet 331 and an oil-water mixture passage 34having an oil-water mixture outlet 341, and a first gear chamber 35communicating with the oil intake passage 33 and oil-water mixturepassage 34. The first gear chamber 35 has an oil intake/dischargepassage 351 linking to the oil inlet 331 and the oil-water mixtureoutlet 341. Beneath the oil intake passage 33 and oil-water mixturepassage 34 there are respectively a first vertical passage 332 and asecond vertical passage 342 communicating with the oil intake passage 33and oil-water mixture passage 34. The second vertical passage 342 holdsa water discharge duct 36 inside. The water discharge duct 36 includesan upper duct 361 and a lower duct 362 with an inner hole 360 formedtherein. The upper duct 361 has a water outlet 3611 on one sideconnecting to the inner hole 360, and the lower duct 362 has a waterinlet 3621 on another side connecting to the inner hole 360. The lowerduct 362 further has an aperture 3622 at the bottom. The first gearchamber 35 has a first arched recess 352 and a second arched recess 353respectively at a front end and a rear end thereof, and a first elongaterecess 354 and a second elongate recess 355 respectively at a left endand a right end thereof that are linked together. The first and secondarched recesses 352 and 353 hold respectively a first oil flow gear 37and a second oil flow gear 38 that engage with each other for rotating.The first and second oil flow gears 37 and 38 have respectively a firstaxle hole 371 and a second axle hole 381. The first axle hole 371 ismovably coupled with a first axle 372, while the second axle hole 381 isfixedly coupled with a second axle 382. The first and second oil flowgears 37 and 38 further are connected to an external sensor (not shownin the drawings) which detects oil delivery amount through rotationnumber.

The holder 40 has an upper coupling boss 41 and a lower coupling boss 42at the top and bottom thereof. The upper coupling boss 41 wedges in thefirst lower recess 32 of the first chunk member 30. The holder 40 alsohas a plurality of screw holes 400 surrounding the upper and lowercoupling bosses 41 and 42 corresponding to the fixing holes 300 toreceive the fastening elements 23 such as screws to fasten the upper lid20, first chunk member 30 and holder 40 together. The holder 40 also hasa first hole 43 and a second hole 44 in the middle run through by thefirst axle 372 and second axle 382. The second hole 44 is coupled with awear-resistant sleeve 441 which has an oil injection port 442 formedthereon and is run through by the second axle 382. The holder 40 furtherhas a lubricant hole 45 at one end communicating to the first verticalpassage 332 and a water discharge passage 46 at another endcommunicating to the oil-water mixture passage 34. The water dischargepassage 46 holds the lower duct 362 of the water discharge duct 36 andhas a distal end holding a check valve 461. The holder 40 further has around hole 47 on the periphery corresponding to the aperture 301 of thefirst chunk member 30 to receive the electric heating pipe 302.

The second chunk member 50 has a second upper recess 51 at the topthereof to be wedged in by the lower coupling boss 42 of the holder 40and a second lower recess 52 at the bottom. It also has a plurality offastening holes 500 surrounding the second upper and lower recesses 51and 52, and an aperture 501 on the periphery corresponding to the roundhole 47 of the holder 40 to allow the electric heating pipe 302 to runthrough the aperture 301 of the first chunk member 30, the round hole 47of the holder 40 and reach the aperture 501 of the second chunk member50. On two side of the second chunk member 50 there are a water intakepassage 53 having a water inlet 531, a water exit passage 54 having awater outlet 541 and a second gear chamber 55 communicating with thewater intake and exit passages 53 and 54. The second gear chamber 55 hasa water in/out passage 551 to communicate with the water inlet 531 andwater outlet 541. Beneath the water intake passage 53 is a first waterpassage 532 vertically communicating therewith. On the upper side andlower side of the water exit passage 54 there are a second water passage542 and a third water passage 543 vertically communicating therewith.The second water passage 542 has a top end leading to the waterdischarge passage 46 and the check valve 461 located at the upper sideto prevent oil from flowing back through the water discharge passage 46to the second water passage 542 caused by internal oil pressure greaterthan water pressure when operation of the apparatus 10 stops.

The second gear chamber 55 includes a first arched recess 552 and asecond arched recess 553 at the front end and rear end, and a firstelongate recess 554 and a second elongate recess 555 at the left end andright end that communicate with one another. The first and second archedrecesses 552 and 553 hold respectively a first water flow gear 56 and asecond water flow gear 57 that engage with each other for rotating. Thefirst and second water flow gears 56 and 57 have respectively a firstaxle hole 561 and a second axle hole 571. The first axle hole 561 ismovably coupled with the first axle 372, while the second axle hole 571is fixedly coupled with the second axle 382. The first and second waterflow gears 56 and 57 are formed at a thickness one third of the firstand second oil flow gears 37 and 38 to facilitate measurement of waterflow and oil amount. The first and second water flow gears 56 and 57also are connected to an external sensor (not shown in the drawings) todetect water flow amount through rotation numbers.

The base 60 is located beneath the second chunk member 50 and has acoupling boss 600 at the top to wedge in the second lower recess 52 ofthe second chunk member 50. It has a plurality of apertures 601surrounding the coupling boss 600 to receive fastening elements 602 tofasten the fastening holes 500 of the second chunk member 50. The base60 also has a water feedback passage 61 vertically communicating withthe first and third water passages 532 and 543 of the second chunkmember 50. The water feedback passage 61 has a water inlet 611 at oneend communicating with the first water passage 532 and a water outlet612 at another end communicating with the third water passage 543, and awater regulation valve 62 in the middle communicating therewithvertically to buffer water intake ratio in response to internal pressurechange of the system. Through the water regulation valve 62 a bufferpassage is formed to provide water at different ratios.

More details of the embodiment of the present invention are elaboratedas follow by referring to FIGS. 3, 4A and 4B.

The upper lid 20 is fastened to the first chunk member 30 and the holder40 below through the fastening elements 23.

The first chunk member 30 contains the first and second oil flow gears37 and 38, and first and second axles 372 and 382 in the first gearchamber 35 that engage with each other to rotate in different directionsas shown in FIG. 4C. During the oil is transported by rotation andpushing the first and second oil flow gears 37 and 38 form a gap 39between them to squeeze the oil to get intake amount at a constantratio. As the second axle 382 is fixedly coupled with the second oilflow gear 38 and second water flow gear 57 that rotate concurrently, andthe first axle 372 is movably coupled with the first oil flow gear 37and first water flow gear 56, the first oil flow gear 37 and first waterflow gear 56 rotate freely.

The first chunk member 30, holder 40 and second chunk member 50 are runthrough by the electric heating pipes 302 on the periphery. The electricheating pipes 302 aim to heat the oil at the initial state to reach aduty temperature in a fluid state to prevent the oil from viscous at alower temperature that could result in unsmooth flowing and difficultyto push the first and second oil flow gears 37 and 38. Hence, theapparatus 10 including the two electric heating pipes 302 does not needto add extra heating means like the conventional technique, and the oilcan be effectively heated to the duty temperature at the initial stateto facilitate oil transport. The water outlet 3611 at one side of thewater discharge duct 36 aims to generate a suction force duringdischarge of the oil to draw and atomize the water from the waterdischarge duct 36, and also facilitate thorough mixing with the oilduring transportation to reach fine and uniform oil-water mixture toform a more efficient oil and water mixture fuel in a downstreamcombustion system.

The wear-resistant sleeve 441 is held in the second hole 44 of theholder 40 and has the oil injection port 442 at one side to receive theoil through the lubricant hole 45 to the surface of the second axle 382for lubrication purpose. Such a design directly channels the oil forlubrication without adding an extra lubrication means and lubricant,hence the structural complexity and cost would be reduced, and thesecond axle 382 from forming direct friction with the hole edge would beprevented. The water discharge passage 46 is located beneath the waterdischarge duct 36 to supply the water upwards to the water dischargeduct 36 for mixing. The water discharge passage 46 also can hold thelower duct 362 of the water discharge duct 36 and hold a check valve 461between the distal end of the water discharge passage 46 and the secondwater passage 542 of the second chunk member 50 to block the secondwater passage 542 to prevent the oil from flowing back through the waterdischarge passage 46 to the second water passage 542 caused by the oilpressure inside greater than water pressure when the apparatus 10 stopsoperation.

The first and second water flow gears 56 and 57 in the second chunkmember 50 are held in the second gear chamber 55 and engage with eachother to rotate in different directions as shown in FIGS. 4B and 4C.They are formed at a thickness one third of the first and second oilflow gears 37 and 38, and aim to control water intake at an amount onethird of the oil so that the oil and water can be mixed at such a ratioto achieve desired combustion efficiency. During the water istransported and pushed by rotation, the water is squeezed through a gap58 formed between the first and second water flow gears 56 and 57 to getwater intake amount at a constant ratio. The second water flow gear 57is fixedly coupled on the second axle 382 which also is coupled with thesecond oil flow gear 38 to form synchronous rotation to control the oiland water to flow at the same time at the same constant ratio, therebycan effectively control mixing proportion. The first water flow gear 56rotates freely on the first axle 372 (as shown in FIGS. 5A and 5B).

The base 60 is fastened to the second chunk member 50 above through thefastening elements 602 to securely hold the entire apparatus 10 formixing and proportioning oil and water. The base 60 contains a waterfeedback passage 61 with a water inlet 611 at one end connecting to thefirst water passage 532, and a water outlet 612 connecting to the thirdwater passage 543. When water flows through the water feedback passage61 to the third water passage 543, a portion of the water passes throughthe water discharge passage 46 to push the check valve 461 which blocksthe aperture 3622 at the bottom of the water discharge duct 36 so thatwater enters through the water inlet 3621 thereof into the inner hole360, and flows out through the water outlet 3611. Before reaching thecombustion system 80% of the oil and 20% of the water are regulated.During combustion pressure changes take place inside the system, byadjusting in advance the water regulation valve 62 located in the middleof the water feedback passage 61 such as turning a knob, screw oradjustment element, water intake ratio can be buffered, and a bufferpassage is formed through the water regulation valve 62 so that aportion of water flows through the buffer passage formed by the wateroutlet 612 and water feedback passage 61 and water inlet 611 back to thefirst water passage 532, while other portion of water flows out throughthe water outlet 3611 to supply water less than 20% (referring to FIG.4B) to achieve a steadier and smoother combustion.

Please refer to FIGS. 5A and 5B for operation of the first and secondoil flow gears 37 and 38 in the embodiment set forth above.

1. Also referring to FIGS. 5A and 4C, when no oil or water flows in, thefirst and second oil flow gears 37 and 38 coupled respectively with thefirst and second water flow gears 56 and 57 through the first and secondaxles 372 and 382, so that the first and second oil flow gears 37 and 38are in a motionless condition. This is the first state.

2. Referring to FIG. 5B, oil is injected initially to gradually push thefirst and second oil flow gears 37 and 38 to rotate in oppositedirections; rotation of the second oil flow gear 38 also drives thesecond water flow gear 57 to rotate at the same time that concurrentlydrives the first water flow gear 56 to rotate, also referring to FIG.4C. This is the second state.

3. Referring to FIG. 5B, during the opposite rotation a gap 39 is formedbetween the first and second oil flow gears 37 and 38, and another gap58 is formed between the first and second water flow gears 56 and 57.These gaps 39 and 58 squeeze a fixed amount of oil and water accordingto a set ratio to pass through. This is the third state.

4. Referring to FIG. 5B, after the first and second oil flow gears 37and 38, and the first and second water flow gears 56 and 57 havesqueezed the oil and water through the gaps 39 and 58 to pass through,the first and second oil flow gears 37 and 38, and first and secondwater flow gears 56 and 57 are driven by the continuous entering oil andwater flow to squeeze a fixed amount of oil and water to pass through.This is the fourth state.

What is claimed is:
 1. A apparatus for mixing and proportioning oil andwater, comprising: an upper lid; a first chunk member which includes atop wedged in by the upper lid and an oil inlet at one side connectingto an oil intake passage and an oil-water mixture outlet at another sideconnecting to an oil-water mixture passage and a first gear chambercommunicating with the oil intake passage and the oil-water mixturepassage, the first gear chamber having an oil intake/discharge passagelinking to the oil inlet and the oil-water mixture outlet, the oilintake passage being connected to a first vertical passage below, theoil-water mixture passage being connected to a second vertical passagebelow, the second vertical passage holding a water discharge duct, thefirst gear chamber containing a first arched recess and a second archedrecess respectively at a front end and a rear end thereof, and a firstelongate recess and a second elongate recess respectively at a left endand a right end thereof that are communicate with one another, the firstand second arched recesses holding respectively a first oil flow gearand a second oil flow gear that are coupled respectively on a first axleand a second axle and engage with each other for rotating in oppositedirections, the first oil flow gear and the second oil flow gear forminga gap therebetween to control oil flow at an amount of a constant ratioat the same time, the first oil flow gear being movably coupled on thefirst axle, the second oil flow gear being fixedly coupled on the secondaxle; a holder which includes a top wedging in the first chunk memberand a first hole and a second hole in the middle run throughrespectively by the first axle and the second axle, and a lubricant holeat one end communicating with the first vertical passage and a waterdischarge passage at another end communicating with the oil-watermixture passage; a second chunk member which is wedged in by the holderand includes a water inlet at one side connecting to a water intakepassage and a water outlet at another side connecting to a water exitpassage and a second gear chamber communicating with the water intakepassages and the water exit passage, the second gear chamber having awater in/out passage connecting to the water inlet and the water outlet,the water intake passage communicating with a vertical first waterpassage below, the water exit passage being interposed vertically by asecond water passage and a third water passage at an upper side and alower side of the second gear chamber, the second gear chamber furtherincluding a first arched recess and a second arched recess at a frontend and a rear end, and a first elongate recess and a second elongaterecess at a left end and a right end that communicate with one another,the first and second arched recesses holding respectively a first waterflow gear and a second water flow gear that are coupled respectively onthe first axle and the second axle and engage with each other forrotating in opposite directions, the second water flow gear and thesecond oil flow gear being fixedly coupled to rotate synchronously todrive the first water flow gear to rotate, the first and second waterflow gears forming another gap therebetween to control water flow amountat a constant ratio at the same time; and a base which is locatedbeneath the second chunk member and contains a water feedback passagevertically connecting to the first water passage and the third waterpassage, the water feedback passage holding a vertical water regulationvalve in the middle to buffer water intake ratio in response to internalpressure alterations, the water regulation valve forming a bufferpassage to allow a portion of water flowing back to the water in/outpassage through the water feedback passage to supply water amount atvarying ratios.
 2. The apparatus of claim 1, wherein the upper lidcontains a plurality of fastening holes on the top thereof and acoupling boss extended from the bottom; the first chunk member includinga first upper recess at the top wedged in by the coupling boss of theupper lid and a first lower recess at the bottom, and a plurality offixing holes surrounding the first upper and lower recesses; the holderincluding an upper coupling boss and a lower coupling boss at the topand bottom of the holder, the upper coupling boss wedging in the firstlower recess of the first chunk member, the holder further containing aplurality of screw holes surrounding the upper and lower coupling bossesto fasten to the upper lid and the first chunk member through aplurality of fastening elements; the second chunk member containing asecond upper recess at the top wedged in by the lower coupling boss ofthe holder and a second lower recess at the bottom, and a plurality offastening holes surrounding the second upper and lower recesses; thebase containing a coupling boss at the top to wedge in the second lowerrecess of the second chunk member and a plurality of aperturessurrounding the coupling boss to receive fastening elements to fasten tothe second chunk member.
 3. The apparatus of claim 1 further includingan electric heating pipe to heat the oil to a fluid state to facilitatemachine start.
 4. The apparatus of claim 1, wherein the water dischargeduct includes an upper duct and a lower duct that contain an inner hole,the upper duct containing a water outlet on one side communicating withthe inner hole, the lower duct containing a water inlet on another sidecommunicating with the inner hole and an aperture at the bottom thereof.5. The apparatus of claim 1, wherein the water discharge passageincludes a distal end holding a check valve to block the second waterpassage of the water exit passage to prevent oil from entering thesecond water passage when the apparatus stops operation.
 6. Theapparatus of claim 1, wherein the first and second oil flow gears andthe first and second water flow gears are connected to an externalsensor to detect oil and water flow amount through rotation numbers. 7.The apparatus of claim 1, wherein the second hole holds a wear-resistantsleeve run through by the second axle.
 8. The apparatus of claim 1,wherein the first and second water flow gears are formed at a thicknessone third of the first and second oil flow gears to facilitatemeasurement of water flow amount and oil flow amount.
 9. The apparatusof claim 1, wherein the water feedback passage contains a water inlet atone end communicating with the first water passage and a water outlet atanother end communicating with the third water passage, and a waterregulation valve to buffer water intake ratio in response to theinternal pressure alterations.